LM358 Low Power Dual Op-Amp IC (DIP-8)

Many op-amps need a split positive-and-negative power supply to work properly, which is awkward in a typical battery-powered or single-rail microcontroller project. The LM358 packs two independent amplifiers into one chip and is specifically designed to operate from a single supply voltage, making it far easier to drop into everyday low-power circuits without needing a separate negative rail. It shows up constantly in sensor signal conditioning, where a weak sensor output needs amplifying before a microcontroller's ADC can read it usefully, as well as in simple voltage comparators, audio preamp stages, and analog filter circuits. Its low cost and single-supply simplicity have made it one of the most commonly stocked op-amps in any electronics parts bin.